Birch trees are known for their tall, thin trunks and white bark. But did you know they trigger a lot of allergy symptoms for much of the population each spring? These allergy symptoms can range from nasal symptoms, like sneezing and a stuffy nose, to the lesser-known oral allergy syndrome (OAS).
We can expect an abundance of cross-reactivity of Birch tree pollen, with other trees such as, the alder (Alnus glutinosa) - hazel (Corylus avellana) or hornbeam (Carpinus betulus) are examples, this year because of the changes in our environmental temperatures. Food cross-reactivity of Birch and apples are known, but..... there are many more. See your Dr. or Allergist for up-to-date information. Sue C. Killian wrote an excellent book about allergy and cross-reactivity.
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